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Old 05-14-2013, 08:40 AM   #121
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No mods and stock tires. Good idea on having them swap tires with another jeep to test the issue.

FL FR
-0.5 Camber -0.4
3.7 Caster 3.8
0.10 Toe 0.11
12.7 SAI 12.3
12.2 Included Angle 11.9

Front:
Cross Camber -0.1
Cross Caster -0.1
Cross SAI 0.3
Total Toe 0.21

RL RR
-0.4 Camber -0.2
0.18 Toe 0.05

Rear:
Cross Camber -0.1
Total Toe 0.22
Thrust Angle 0.06

Everything is within spec I would say right down the middle. The guy said they like to see caster on the front the same, but it requires adj ball joints. However mine is within 0.1 of each other and that wouldn't cause this issue I'm seeing. He said based on Thrust Angle I would go to left if anything.

Also, I'm about 200lbs and I've tried the "put a 200lbs passenger in the car as well" idea.

Just hoping this info can help out OP and myself.

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Old 05-14-2013, 09:16 AM   #122
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Perfect... The caster is not going to be the same. It's almost impossible.
You could try adjusting toe out a little to 1/8 in

You are at the lower end of caster overall but shouldn't be a problem and won't cause a pull.

Have you checked your brakes. Maybe a caliper is sticking ?

Edit: control arms or cam bolts adjust for caster.

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Old 05-14-2013, 09:25 AM   #123
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For what it's worth; I got my 2013 2 door about 5 months ago. I started out with 40 psi in my 18" wheel upgrade from the dealer and I was all over the road. It scared me on the way home. A simple avoidance maneuver almost sent me off-road but not in a fun way. I checked here and lowered to 30 psi and drove with the TPS light burning bright but much more manageable on the highway for about 2 months. Then I raised the pressure up to 35 psi. The light went out and I'm still driving straight. I think it had to do with tire pressure + the learning curve. Changing vehicles requires learning the new "feel" until it becomes automatic. I don't have any problem now, at any speed. Heavy cross winds can still be a little dicey but that's just the nature of the shape and side profile.
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Old 05-14-2013, 09:48 AM   #124
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My '13 JK 2 door requires a little work to keep it in a straight line, but I just put that down to the steering system. I don't think it'll ever be as smooth/precise as something with rack & pinion steering. It's kind of fun to feel like Fonzi driving on a TV show constantly "sawing" at the wheel. I notice it more when I drive my wife's car. My Jeep drives fine, but it takes more correction than anything I've owned before. This is my first Jeep so I just accept is as part of its personality.
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Old 05-14-2013, 09:58 AM   #125
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I replaced a 17 year old Explorer with a JKU Moab edition and I find the highway ride to be very comparable to an Explorer. I think Jeep could sell even more Wranglers if they pitched it as a replacement for people who don't like crossovers.
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Old 05-14-2013, 10:18 AM   #126
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Seems like Jeeps are kinda weird that way, and that there are several factors that affect how one Jeep handles vs another. Case in point - a guy I know bought a brand new JKU - loved it / drove great / even did long-trips (500+ miles) without a problem; he skimped on the options though so within a month he traded it in for another brand new JKU with the options he wanted. But then he traded that new one in less than a month later for a non-JK vehicle (Cherokee) because he said the ride quality & handling in that Jeep was awful compared to the 1st one. Seems like Chrysler should pay attention to some of these forums, as it seems a few bad apples from the factory are giving Jeep a bad reputation for handling, or at a minimum making a bad reputation worse. I realize it's not a Porshe, but that doesn't mean you shouldn't feel safe driving down a paved road with it.
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Old 05-14-2013, 10:20 AM   #127
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I have noticed this wheel bump also. I drove 600 miles each way on interstates to get a hard top. My wife drove for a short period of time with the soft top on and said that she didn't want to drive due to the feel of the Jeep. When we got to the hard top and put the soft top down and installed the hard top, she said that she wanted to drive it due to the difference in the noise and the feel of the hard top. So, maybe the type of top on the Jeep makes a difference or enhances the feel on the interstate. ???
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Old 05-14-2013, 11:14 AM   #128
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Caster makes a huge difference. The spec range is I believe 3.7- 4.7.
That being said, somebody with 3.7 is going to have worse handling then somebody with 4.7-5

Also a 2 door will handle worse then a 4 door with short wheelbase.

My jeep had a slight pull left when stock. Went away with the lift/adjustable lower CA's
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Old 05-14-2013, 11:16 AM   #129
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Quote:
Originally Posted by Tagg View Post
I have noticed this wheel bump also. I drove 600 miles each way on interstates to get a hard top. My wife drove for a short period of time with the soft top on and said that she didn't want to drive due to the feel of the Jeep. When we got to the hard top and put the soft top down and installed the hard top, she said that she wanted to drive it due to the difference in the noise and the feel of the hard top. So, maybe the type of top on the Jeep makes a difference or enhances the feel on the interstate. ???
Weight helps sometimes.
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Old 05-14-2013, 11:17 AM   #130
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Quote:
Originally Posted by macbazzr View Post
Seems like Jeeps are kinda weird that way, and that there are several factors that affect how one Jeep handles vs another. Case in point - a guy I know bought a brand new JKU - loved it / drove great / even did long-trips (500+ miles) without a problem; he skimped on the options though so within a month he traded it in for another brand new JKU with the options he wanted. But then he traded that new one in less than a month later for a non-JK vehicle (Cherokee) because he said the ride quality & handling in that Jeep was awful compared to the 1st one. Seems like Chrysler should pay attention to some of these forums, as it seems a few bad apples from the factory are giving Jeep a bad reputation for handling, or at a minimum making a bad reputation worse. I realize it's not a Porshe, but that doesn't mean you shouldn't feel safe driving down a paved road with it.
"I realize it's not a Porshe, but that doesn't mean you shouldn't feel safe driving down a paved road with it"

Try explaining this to people .. Doesn't work lol
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Old 05-14-2013, 11:18 AM   #131
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My 2 door is straight as an arrow. I do however get to enjoy the typical 2 door shuffle.
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Old 05-14-2013, 11:19 AM   #132
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So many variables, with the aligment, tires, ... For me it felt strange when I got my Cherokee back in 96, for the fact that I was coming from individual suspensions to two solid axles. But it didn't took long to get use to it. I kept it until 2006 where I went to an SUV with independant suspension. I also felt strange at first. Now I'm back to solid axles with my new JK 2dr, and I love it. I like the way that it's handling.

Even with its short wheel base, I'm not feeling that it is more affected by cross winds than my previous 4x4 or even the Focus of my wife.

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